A primal-dual hybrid gradient method for non-linear operators with applications to MRI

Tuomo Valkonen

We study the solution of minimax problems ${\min }_x{\max }_{y}G(x)+⟨K(x),y⟩-F^{\ast }(y)$ in finite-dimensional Hilbert spaces. The functionals $G$ and $F^{\ast }$ we assume to be…